这个功能网上搜了好多资料。贡献一下，转载须注明并对卓二妹的无私奉献表示感谢。
1）签名算法使用SHA1withRSA。
2）签名后的数据位base64编码的密文字符串。
3）三个环境进行签名的私钥的格式不同，需要openssl工具进行转换。
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JAVA签名：
1）从包含公私钥的pfx证书中取得.key私钥：
Bat代码 
F:\openssl-0.9.8k_WIN32\bin>openssl pkcs12 -in f:\certs\zhuo.pfx -out f:\certs\zhuo.pem
Enter Import Password:（输入导出时的密码）
MAC verified OK
Enter PEM pass phrase:（长度至少为4位的pem证书密码）
Verifying - Enter PEM pass phrase:（确认一次pem证书密码）
F:\openssl-0.9.8k_WIN32\bin>openssl pkcs8 -topk8 -inform PEM -outform DER -in f:\certs\zhuo.pem -out f:\certs\zhuo_der.key -nocrypt
Enter pass phrase for f:\certs\zhuo.pem:（输入pem证书密码）
该步骤生成的.key文件即为JAVA签名所需私钥文件。
2）生成公钥：直接从IE中导出X.509格式二进制编码的cer为后缀的公钥证书即可。
3）签名验签：
Java代码
//签名：
/**
*
* 函数功能说明： 签名数据
* created by zhuoyueping 2013-8-17
* modified by zhuoyueping 2013-8-17
* 修改内容说明：
* @param @param content:签名原文
* @param @param keyfile：私钥文件.key路径
* @param @return
* @param @throws Exception
* @return String ：base64签名
* @throws
*/
public String sign(String content, String keyfile) throws Exception {
File file = new File(keyfile); //keyfile key文件的地址
FileInputStream in;
in = new FileInputStream(file);
ByteArrayOutputStream bout = new ByteArrayOutputStream();
byte[] tmpbuf = new byte[1024];
int count = 0;
while ((count = in.read(tmpbuf)) != -1) {
bout.write(tmpbuf, 0, count);
tmpbuf = new byte[1024];
}
in.close();
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(bout
.toByteArray());
RSAPrivateKey privateKey = (RSAPrivateKey) keyFactory
.generatePrivate(privateKeySpec);
Signature dsa = Signature.getInstance("SHA1withRSA"); //采用SHA1withRSA加密
dsa.initSign(privateKey);
dsa.update(content.getBytes("UTF-8")); //voucher需要加密的String必须变成byte类型的
byte[] sig = dsa.sign();
String rtnValue = new String(Base64.encode(sig));
return rtnValue;
}
/**
*
* 验证签名
*
*
* @param data 原文字节
* @param sign 数据签名[BASE64]
* @param certificatePath 证书存储路径
* @return
* @throws Exception
*/
public static boolean verifySign(byte[] data, String sign,
String certificatePath) throws Exception {
// 获得证书
X509Certificate x509Certificate = (X509Certificate) getCertificate(certificatePath);
return verifySign(data,sign,x509Certificate);
}
private static boolean verifySign(byte[] data, String sign, X509Certificate x509Certificate)throws Exception {
PublicKey publicKey = x509Certificate.getPublicKey();
Signature signature = Signature.getInstance(x509Certificate
.getSigAlgName());
signature.initVerify(publicKey);
signature.update(data);
return signature.verify(Base64.decode(sign.getBytes()));
}
C#签名：
1）从包含公私钥的pfx证书中取得.key私钥：
Bat代码
F:\openssl-0.9.8k_WIN32\bin> openssl rsa -in d:\\certs\\zhuo.pfx -nocerts -nodes -out d:\\certs\\zhuo.key
该步骤生成的.key文件即为C#签名所需私钥文件。
2）公钥生成：于java方式相同，都是二进制格式的x509证书3）签名及验签：
C#代码
using System;
using System.Text;
using System.Security.Cryptography;
using System.Web;
using System.IO;
using System.Security.Cryptography.X509Certificates;
namespace Safe
{
public class SafeUtil
{
///
/// 验证签名
///
///
///
///
///
验签结果 public bool Verify(String OriginalString, String SignatureString,String publicKeyPath)
{
//将base64签名数据转码为字节
byte[] signedBase64 = Convert.FromBase64String(SignatureString);
byte[] orgin = Encoding.UTF8.GetBytes(OriginalString);
X509Certificate2 x509_Cer1 = new X509Certificate2(publicKeyPath);
RSACryptoServiceProvider oRSA = new RSACryptoServiceProvider();
oRSA.FromXmlString(x509_Cer1.PublicKey.Key.ToXmlString(false));
bool bVerify = oRSA.VerifyData(orgin, "SHA1", signedBase64);
return bVerify;
}
///
/// 验证签名
///
///
///
///
验签 public string Sign(string data, string privateKeyPath)
{
RSACryptoServiceProvider rsaCsp = LoadCertificateFile(privateKeyPath);
byte[] dataBytes = Encoding.UTF8.GetBytes(data);
byte[] signatureBytes = rsaCsp.SignData(dataBytes, "SHA1");
return Convert.ToBase64String(signatureBytes);
}
private byte[] GetPem(string type, byte[] data)
{
string pem = Encoding.UTF8.GetString(data);
string header = String.Format("-----BEGIN {0}-----", type);
string footer = String.Format("-----END {0}-----", type);
int start = pem.IndexOf(header) + header.Length;
int end = pem.IndexOf(footer, start);
string base64 = pem.Substring(start, (end - start));
return Convert.FromBase64String(base64);
}
private RSACryptoServiceProvider LoadCertificateFile(string filename)
{
using (System.IO.FileStream fs = System.IO.File.OpenRead(filename))
{
byte[] data = new byte[fs.Length];
byte[] res = null;
fs.Read(data, 0, data.Length);
if (data[0] != 0x30)
{
res = GetPem("RSA PRIVATE KEY", data);
}
try
{
RSACryptoServiceProvider rsa = DecodeRSAPrivateKey(res);
return rsa;
}
catch (Exception ex)
{
}
return null;
}
}
private RSACryptoServiceProvider DecodeRSAPrivateKey(byte[] privkey)
{
byte[] MODULUS, E, D, P, Q, DP, DQ, IQ;
// --------- Set up stream to decode the asn.1 encoded RSA private key ------
MemoryStream mem = new MemoryStream(privkey);
BinaryReader binr = new BinaryReader(mem); //wrap Memory Stream with BinaryReader for easy reading
byte bt = 0;
ushort twobytes = 0;
int elems = 0;
try
{
twobytes = binr.ReadUInt16();
if (twobytes == 0x8130) //data read as little endian order (actual data order for Sequence is 30 81)
binr.ReadByte(); //advance 1 byte
else if (twobytes == 0x8230)
binr.ReadInt16(); //advance 2 bytes
else
return null;
twobytes = binr.ReadUInt16();
if (twobytes != 0x0102) //version number
return null;
bt = binr.ReadByte();
if (bt != 0x00)
return null;
//------ all private key components are Integer sequences ----
elems = GetIntegerSize(binr);
MODULUS = binr.ReadBytes(elems);
elems = GetIntegerSize(binr);
E = binr.ReadBytes(elems);
elems = GetIntegerSize(binr);
D = binr.ReadBytes(elems);
elems = GetIntegerSize(binr);
P = binr.ReadBytes(elems);
elems = GetIntegerSize(binr);
Q = binr.ReadBytes(elems);
elems = GetIntegerSize(binr);
DP = binr.ReadBytes(elems);
elems = GetIntegerSize(binr);
DQ = binr.ReadBytes(elems);
elems = GetIntegerSize(binr);
IQ = binr.ReadBytes(elems);
// ------- create RSACryptoServiceProvider instance and initialize with public key -----
CspParameters CspParameters = new CspParameters();
CspParameters.Flags = CspProviderFlags.UseMachineKeyStore;
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(1024, CspParameters);
RSAParameters RSAparams = new RSAParameters();
RSAparams.Modulus = MODULUS;
RSAparams.Exponent = E;
RSAparams.D = D;
RSAparams.P = P;
RSAparams.Q = Q;
RSAparams.DP = DP;
RSAparams.DQ = DQ;
RSAparams.InverseQ = IQ;
RSA.ImportParameters(RSAparams);
return RSA;
}
catch (Exception ex)
{
return null;
}
finally
{
binr.Close();
}
}
private int GetIntegerSize(BinaryReader binr)
{
byte bt = 0;
byte lowbyte = 0x00;
byte highbyte = 0x00;
int count = 0;
bt = binr.ReadByte();
if (bt != 0x02) //expect integer
return 0;
bt = binr.ReadByte();
if (bt == 0x81)
count = binr.ReadByte(); // data size in next byte
else
if (bt == 0x82)
{
highbyte = binr.ReadByte(); // data size in next 2 bytes
lowbyte = binr.ReadByte();
byte[] modint = { lowbyte, highbyte, 0x00, 0x00 };
count = BitConverter.ToInt32(modint, 0);
}
else
{
count = bt; // we already have the data size
}
while (binr.ReadByte() == 0x00)
{ //remove high order zeros in data
count -= 1;
}
binr.BaseStream.Seek(-1, SeekOrigin.Current); //last ReadByte wasn't a removed zero, so back up a byte
return count;
}
}
}
PHP签名：
1）从包含公私钥的pfx证书中取得.key私钥：于C#的证书一致
2）公钥生成：
Bat代码
F:\openssl-0.9.8k_WIN32\bin>openssl pkcs12 -in f:\certs\zhuo.pfx -out f:\certs\zhuo.pem
3）签名及验签：
Php代码
/*
签名数据：
data：utf-8编码的订单原文，
privatekeyFile：私钥路径
passphrase：私钥密码
返回：base64转码的签名数据
*/
function sign($data, $privatekeyFile,$passphrase)
{
$signature = '';
$privatekey = openssl_pkey_get_private(file_get_contents($privatekeyFile), $passphrase);
$res=openssl_get_privatekey($privatekey);
openssl_sign($data, $signature, $res);
openssl_free_key($res);
return base64_encode($signature);
}
/*
验证签名：
data：原文
signature：签名
publicKeyPath：公钥路径
返回：签名结果，true为验签成功，false为验签失败
*/
function verity($data, $signature, $publicKeyPath)
{
$pubKey = file_get_contents('D:/certs/test.pem');
$res = openssl_get_publickey($pubKey);
$result = (bool)openssl_verify($data, base64_decode($signature), $res);
openssl_free_key($res);
return $result;
}
* PHP需要注意版本和一些包的导入，如果有报错再google了~~